Moon Card
The Moon in Tarot, as in astrology and other occult traditions, has had a bad press because of the rank misogyny of many male occultists - eg Papus and Crowley to name just two.
To become an occultist in Indo-European (and most other) cultures, you needed to be literate, preferably in Latin and Greek as well as your own vernacular, and have access to an exceptional library. A private income helped.
Few women had these opportunities before 19th century. Further, well-to-do educated men had the means, the contacts and the opportunity to publish in a way that simply wasn't open to women until the early 20th century.
Not only were male occultists informed by the misogyny of their own culture, but they understood better than most, the extraordinary and compelling nature of feminine magical power. For these reasons they were very wary and often negative about expressions of this power, of which the moon is perhaps the most important. Thus we have a tradition of negativity about the moon which still survives in some Tarot schools.
If you want a good corrective to all that nonsense, read (if you haven't already done so) Robert Graves' masterpiece on the magical feminine, The White Goddess.
For my money, the moon is the ruler of all magic, and especially of divination. You cannot interpret the planets, or understand your dreams, or read the Tarot, without honouring her. She is Mother, Goddess, and High Priestess, and you will understand nothing of the occult arts without her guidance.